单选题：For swing event handling mechanism, which one below is NOT corre

For swing event handling mechanism, which one below is NOT correct? @[D](2)

A. Event source like JButton is able to have more than one ActionListener objects registered
B. When an event occurs, the source object notices all the registered listeners
C. A registered listener is able to be de-registered from a source object dynamically
D. One listener can not be registered at more than one source object



A.Event source like JButton is able to have more than one ActionListener objects registered
B.When an event occurs, the source object notices all the registered listeners
C.A registered listener is able to be de-registered from a source object dynamically
D.One listener can not be registered at more than one source object


答案：D